Locomotive-engine-draft regulator



- March 18, 1930.

ALZE LOCOMOTIVE ENGINE DRAFT REGULATOR Filed Aug. 16, 1927 Jnven/or: /rar2 422?;

Attorney Patented Mar. 18, 1939 UNETED STATES KARL ALZE, OF DORTM'UNID, GERMANY LOCOMOTIVE-ENGINE-DRAFT REGULATOR Application filed August 16, 1927, Serial No. 213,371, and in Germany June 25, 1927.

regulator in connection with a blast device for locomotive engines, and consists of a tubular top so disposed on the outlet of the blast pipe below the chimney as to be easily rotated, the inner wall of such top being provided with a throttling enlargement having an increasing cross section in upward direction, and being guided by means of a limiting pin in a horizontal slot provided either in the blast pipe itself or in the lower part of the top which is formed as a socket,

provision being thus made at the same time for limiting the rotation ineither direction. The desired or correct adjustment between the top, which rests and is guided on the head of the blast pipe, and the throttling enlargement, with which the top is rigidly connected, is always ensured. Further, this device possesses the advantage of being easily fitted to any blast pipe without special alterations being made. This'top is connected with a lever gear operated from the drivers stand. By operating the gear the tubular top is rotated, causing the throttling enlargement to take up various positions in the inner wall of the blast pipe. This causes the exhaust issuing from the blast pipe to be deflected to one side of the wall of the chimney, the result being that a similar onesided action takes place on the left or righthand side of the boiler tubes, and, in addition, on the left or rightgrate' surface, whereby the draft is reduced or increased.

The enclosed drawing exemplifies the subject of the invention. V

Fig. 1 is an elevation, partly in section, of the blast pipe with its top arranged in a locomotive engine.

Fig. 2 is an elevation on a largerscale of the top fitted on the head of the blast pipe.

Fig. 3 is a plan of the top with the operating gear.

A tubular top member I) is rotatably mounted on the blast pipe a, preferably by interposing a ball bearing. The top is provided with a throttling enlargement 0 having an increasing section in upward direction on one side of its inner wall. The lower part of the top, which is formed as a socket, and

surrounds the head of the blast pipe a, is provided with a horizontally disposed slot 6 in which is guided a guiding or limiting pin 01; The horizontal slot can just as well be arranged in the head of the blast pipe, and '55 the limiting pin fastened in the socket of the top. The top I; has a projection f on the outside which is bored to receive a bolt for securing a rod 9 which is connected with a bellcrank lever, and operated by suitable means '5 co from the drivers stand.

I claim as my invention:

1. Locomotive engine draft in connection witha blast pipe, through which the exhaust passes, disposed below the chimney, and having a tubular top rotatably disposed on its outlet, the inner wall of the top being provided with a throttling enlargement having an increasing section in upward direction.

2. Locomotive engine draft regulator in' connection with a. blast pipe disposed below the chimney and having a top rotatably disposed on its outlet, provided on the one side with a throttling enlargement having an increasing section in upward direction, such top being guided by means of a guiding pin in a horizontally disposed guiding slot provided in the socket of the top.

3. Locomotive engine draft regulator in connection with a. blast pipe disposed below the chimney with top rotatably disposed on its outlet, provided with a throttling enlargement having an increasing section in upward direction, and disposed on one side of the; inner wall, such top being guided by means' of a guiding pin in a horizontally disposed guiding slot provided in the socket of the top, the top being capable of rotation round the vertical axis by means of gear operated from the drivers stand.

4. A locomotive draft device for the ch'imney thereof comprising a blast pipe; and a regulator secured at the top of theblast pipe and comprising a tubular member having means therein to deflectthe exhaust issuing" T" from the blast pipe to one side of the chimney to thereby regulate the draft.

5. A locomotive draft device for the chimney thereof comprising a blast pipe; a momher at the top of the blast pipehaving means therein for defieeting the exhaust issuing from the blast pipe to one side of the chimney; and a lever secured to said member adapted to rotate the member to thereb regulate the draft.

In testimony whereof I have signed my name to this specification.

KARL ALZE. 

